Specifications:

Manufacturer's Part Number:

20731

The March Chevy Small Block Ultra Inward Mount Serpentine Kits are precision CNC machined from solid billet 6061-T6 aluminum to fit perfectly, handle high torque and vibration. This bracket kit comes complete with stainless steel tensioning rods and chromoly rod ends for high performance operation. They are powder coated to eliminate polishing in those hard to reach places. Matching serpentine pulleys are precision CNC machined from 6061-T6 aluminum and will not fracture like common cast pulleys. The street rod ratio increases water flow and fan speed helping at critical low speed driving!

Kits Include:

Alternator Bracket

Alternator Pulley with Fan and Nose Cover

Water Pump Pulley with Nose Cover

Crankshaft Pulley

Tensioning Rods & Adjustable Rod Ends

Grade 8 Mounting Hardware
Power Steering Kits Add:

Power Steering Bracket & Pulley
A/C Kits Add:

A/C Bracket, Hardware and Nose Cover
Kits Require:

13'' Clearance from water pump centerline to hood (see diagram below)

Passenger side cylinder head needs one hole tapped on 1969-84, 1985-up heads are bolt on (Will work with Vortec heads)

If using ZZ4 timing cover you will have to modify short water pump for clearance

GM 10si style alternator with mounting tabs at 6 and 12 O'Clock

Most kits require a standard rotation small block Chevy short water pump